Steps to reproduce

1. vim --clean
2. Input some text
3. :colo blue. The Normal text color changes to an orange one.
4. :set cursorline termguicolors
5. Move cursor and you can see the text becomes white on cursor line

95e8faa is the first bad commit.

Expected behaviour

The cursor line foreground color doesn't change if not explicitly set, like in GUI or with 'notermguicolors'.

Version of Vim

9.2.43

Environment

Arch Linux, GNOME Termal 3.58.1-1 with or without tmux, $TERM = xterm-256color or tmux-256color.

Logs and stack traces